‘Doctor Who’ Season Premiere Preview

The Doctor will see you... tomorrow!

This Saturday, "Doctor Who" returns to BBC America for its sixth season of time travel adventures.

Ahead of the premiere, Den of Geek has debuted several screencaps from the two-part episode, "The Impossible Astronaut" and "Day of The Moon."

First up, we have Matt Smith as the Doctor. He wears a Stetson now. "Stetsons are cool."

Next, we find Karen Gillan's Amy Pond in the Utah desert, which for the first time in "Doctor Who" history was actually filmed in America!

Arthur Darvill also returns as Rory Pond, Amy's husband. Weirdly, he seems to have taken Amy's last name rather than the other way around. I blame the Doctor.

After Rory, we have River Song (Alex Kingston), who is rumored to be everything from the Doctor's wife to his murderer. Place your bets now, this season is supposed to reveal who she is once and for all.

Now for a couple of pictures out of context.

And finally, "The Impossible Astronaut" himself, whoever he is…

If you want an even more concrete idea about what's ahead for the Doctor and his crew, the BBC has released new synopsis for the first two episodes. If you don't want to know anything, consider this your SPOILER WARNING and turn back now!

Episode 1: The Impossible Astronaut

Four envelopes, numbered 2, 3 and 4, each containing a date, time and map reference, unsigned, but TARDIS blue. Who sent them? And who received the missing number one? This strange summons reunites the Doctor, Amy, Rory and River Song in the middle of the Utah desert and unveils a terrible secret the Doctor’s friends must never reveal to him.

Placing his life entirely in their hands, the Doctor agrees to search for the recipient of the fourth envelope – just who is Canton Everett Delaware the Third? And what is the relevance of their only other clue: ‘Space 1969′? Their quest lands them – quite literally – in the Oval Office, where they are enlisted by President Nixon himself to assist enigmatic former-FBI agent Canton, in saving a terrified little girl from a mysterious spaceman.

Episode 2: Day of the Moon

The Doctor is locked in the perfect prison. Amy, Rory and River Song are being hunted down across America by the FBI. With the help of new friend and FBI-insider, Canton Everett Delaware the Third, our heroes are reunited to share their discoveries, if not their memories. For the world is occupied by an alien force who control humanity through post-hypnotic suggestion and no one can be trusted. Aided by President Nixon and Neil Armstrong’s foot, the Doctor must mount a revolution to drive out the enemy and rescue the missing little girl. No-one knows why they took her. Or why they have kidnapped Amy Pond …

"Doctor Who" season six starts on Saturday, April 23 at 9PM on BBC America.